Paint & Powder-Coating Cross-Hatch Adhesion Test (ISO 2409 / ASTM D3359) Grader

Deterministic Cross-cut lattice homography + substrate-vs-coating spectral unmixing per cell + ISO 2409 / ASTM D3359 area-threshold classifier engine (.jpg, .heic, .png, .pdf) built for Elcometer, DeFelsko PosiTest, AkzoNobel Interpon, PPG — zero-upload ephemeral Wasm RAM execution.

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